Skupper review
A focused way to connect services across clusters and network boundaries.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Skupper is an open-source application interconnect for connecting services across Kubernetes clusters and non-Kubernetes environments. It is aimed at teams that need application-layer service networking across network boundaries, including deployments spanning Kubernetes, Docker, Podman, Linux systems, virtual machines, or bare metal. Skupper exposes services through connectors and listeners, routes traffic between connected environments, and can operate without requiring VPNs or public exposure. Its open-source model avoids paid plan tiers, while operation is handled through a CLI, Kubernetes custom resources, controllers, and routers.
The standout capability is service connectivity across separate environments without treating the entire underlying network as one flat space. Skupper supports cross-cluster routing and dynamic load balancing, so connected services can communicate across boundaries while remaining application-focused. Mutual TLS provides authentication and encryption for traffic in transit, and Kubernetes network policies can restrict service access. More granular controls cover incoming links, outgoing hosts, services, and exposed resources, giving operators several policy points for controlling how services connect.
Skupper is a strong fit when the primary requirement is connecting selected services across clusters or between Kubernetes and non-Kubernetes platforms. It is less suitable for teams seeking a general container networking interface, because its category capabilities center on application-layer interconnects rather than a general-purpose CNI plugin. Buyers should choose it for multi-cluster service exposure, routing, encryption, and policy control; an alternative is more appropriate when the main need is broader container network infrastructure rather than service-level connectivity.
Skupper pros and cons
- Where it wins
- Connects services across Kubernetes clusters and non-Kubernetes environments
- Provides mutual TLS, routing, load balancing, and access policies
- Supports Kubernetes, Docker, Podman, Linux, VMs, and bare metal
- Where it doesn't
- Not a general-purpose container CNI plugin
- Requires CLI, controllers, routers, or custom resources to operate
- Its focus is service networking rather than full network infrastructure
Skupper fact sheet, pricing and score →
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